Twisting and doubling apparatus.



T H FAIRCHILD TWIS'HNG AND DOUBLING APPARATUS. l APPLICATION FILED AY5 1911. 1,265,895, Patented M@y14,1918.

Invno'r:

bymwkm Attys.

UNITED STATES `PATENT OFFICE.-

THOMAS H. FAIRCHILD, 0F J' ON'ESBOBO, TENNESSEE, ASSIGNOR TO D RAPER CORPORA- TION, 0F HOPEDALE, MASSACHUSETTS, A CORPORATION 0F MAINE.

Specification et Letters Intent.

Patented May 14, 1918.

Application led Hay 15, 1917. Serial No. 168,668.

To all 'whom t may concern.'

Be it known that I, THoMAs H. FA I:B CHILD, a citizen of the United States residing at Jonesboro, county of Washington, State of Tennessee, have invented an Improvement in Twistin and Doubling Apparatus, of which the ollowing descri tion, 1n connection with the accompanying wing, is a specification, like characters on the drawing representin like parts.

This invention re ates to a. machine for twisting together a plurality of ends and windin the same upon a yarn receiver and it has ger its object to provide a novel device for manipulating the yarn by which the feed of the yarn will be stopped in case the yarn breaks between the yarn receiver and the feed rolls, or in case one strand becomes entangled with an adjacent strand.

In accordance with my improvements I employ a yarn guide in the rear of the feed rolls which has two guide eyes, and the ends which are to be doubled or twisted together are fed from the creels through one of the guide eyes, thence between the feed roll and the presser roll the latter usually merely resting on the roll and being driven b frctional engatglment therewith), and tllence back over e presser roll and through the other 'de eye and thence between the feed ro and presser rolls and to the yarn receiver. The advantage of this construction is that if the yarn breaks between the feed rolls and the yarn receiver, the broken end will in most cases be icked up by the yarn which asses around t e presser roll and will thus e incor orated lnto the loop which embraces said) presser roll and passes through one of the guide eyes instead of being delivered from the feed rolls, and as a result, after the, yarn end has made a few turns about the presser roll, the latter will be raised' from the feed roll suiliciently to stop the feedin movement, thus preventing any apprecia le waste.

In order to give an understanding o f my invention, I have illustrated in the drawin a selected embodiment thereof which `will now be described, after which the novel features will be pointed out in the appended claims.`

I n the drawin Figure 1 is a vertical sectional view o 'a portion of a doubling and twisting machine showing my improvements applied thereto;

Fig. 2 1s an enlar d plan view showing the eed rolls and lllustrating the course which the yarn takes; n.

Fig. 3 is a view of one form of my improved yarn guide detached from its support;

Fig.- 4 is a section on the line 4 4, Fig. 2.

1 indicates the frame of a doubllng and twisting machine and 2 is the arn receiver on which the doubled and twlsted yarn is wound. The illustrated embodiment of the invention is a so-called ring-twisting machine, that is, the doubled yarn 3 is led through a traveler 4 which o crates on a spinning ring 5 of usual type, t at is mounted on the ring-rail 6. The yarn receiver is supported on a positively-driven spindle 7 as usual in devices of this type.

In machines of this nature the yarn ends from the creel are led betwen two rolls which are in the nature of feed rolls and which o crate to draw the yarnffrom the cree] an feed it to the yarn receiver. One of the rolls ofthe pair (usually the bottom roll). betweeni which the yarn is fed is a positively-driven roll and the other roll (usually the top rolll merely rests on the bottom roll and is rotated by frictional engagement therewith,the to roll thus acting as a sort of presser roll. n some machines there is only one bottom or feed roll and the presser roll is situated directly above it. In other machines, two positively-driven bottom rolls ,are employed and the top or! presser roll is situated between them and is supported by both of them. It is the latter construction which I have herein shown, and 8 indicates the positivelydriven bottom rolls and 9 the presser roll which rests loosely thereon.

The parts thus far described are or maybe all as usual in doubling and twisting machines of this t e and hence it will not be necessary to their operation will be lreadily understood by those skilled in the a In accordance with my invention I employ a double yarn guide situated back of the-feed rolls and provided with two separate guide-eyes so arranged that the ends 10 to be twisted together are led through one of the guide-eyes and thence between the rther describe them as bottom and top rolls` and thence back over the top roll to the other guide-eye and then between the bottom and top rolls` in to the yarn receiver. This yarn-gui e is shown at 11 and it com bent to form a shank a lower guide-eye 13 and an upper guide-eye 14 which is separated from the lower guide-eye. This yarn guide may be secured to any suitable support. I have herein shown it as mounted on the back-bnr 15 which is sometimes constructed to have a reciproeatory or traverse motion so that the wear of the varn will be distributed over a greater surface of the bottom and top rolls. The ends 10 are led through the lower guide-eye 13, thence between the bottom rolls 8 and the tollroll 9, then are led back over the top ro 9, as shown at 16, and through the guide-eye 14, and thence are led between the bottom rolls 8 and top roll 9, and thence to the gindeeye 17 in the usual thread-board 18, and thence to the traveler 4. In this way a. loop 19 of the yarn is formed around the top roll 9, said loop being;` held taut by the guideeye 14.

If in the operation of the device the twisted yarn 3 breaks between the feed rolls 8 and the yarn receiver it is desirable to stop the feed of the yarn until the end can be spliced thereby to prevent waste. The construction herein shown accomplishes this, for if the yarn does thus break on the delie ery side of the feed rolls 8, then the broke n end will be picked up by the loop of strems that are passing around the top roll El and will be carried around with and wound into 1in loo 19. This loo will thus increase in .size an the tension o the 1 will increase with each succeeding lap. a few laps have been 'wound intothe loop 19 the top roll 9 will become clogged so that it will not turn and thus the feed of the yarn will be stopped. The stopping of the feed is thus accomphshed simply by the use of my improved -gnide and without the necel r of employing any more or less compli stop mechanism for this purpose.

Another advantage resulting from my improvement is that itprevents waste which would occur when lone yarn 3 becomes enwith an ad'acent yam due to undue slackness in one o the two adjacent yarns. This operation is sometimes referred to as um a piece of wire doubling If the 3 dnould for an reason become undnlyyuack feed rolls 8 and the yarn receiver, will be picked up by the tgp roll 9 and carried over the latter into e loop 19, time preventing the occurrence of suiclent slackness in the portion of the yarn between the feed rolls and yarn receiver to cause any entangling between adjacent yarns.

The device is simple in construction and can be casil applied to any doubling or twisting e, and when in use it has the effect of a sto motion in proven further feeding o the yarn if the yarn reaks on the delive side of the feed rolls or if it becomes und y slack.

While I have illustrated herein a selected embodiment of m invention, I do not wish to be limited to constructional features shown.

I claim:

1. In a doubling and twist' apparatus the combination with a rotaltldle yarn re: ceiver and means to twist and wind yam thereon, of a feed roll, a top roll loosely resting on and rotated by frictlonal contact with the feed roll, and a yarn 'de situated on the feeding side of the f roll and having two guide eves so situated that the yarn which is delivered from both guide eyes pases between portions of the feed roll and to roll that have frictional engagement with each other at substantiall the same point whereby if the yarn brea s betavveenl the top roll and yarn receiver. the broken and will be caught by and wound in the loop of yarn that encircles the top roll.

2. In a doubling and r machine, thecoxnbinationmtharotatab yarnreceiver and means to twist and wind yarn thereon, of a feed roll., a roll loosely resting on and rotated by frictional contact with the feed roll, a back-bar, and a yarne sustained by the back-bar and having two guide-eyes, one situated above the other, the ends from the creel earned thelower guid eand encebetwcen rolls andaround ctoProEthencetLrm the uppeirhguide-eye and between the again to e yarn receiver.

In testimony whereof, I have signed my name to this specification.

THOMAS H. F.

such slacknesoY inn 

